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首页> 外文期刊>RSC Advances >Closed-loop solvometallurgical process for recovery of lead from iron-rich secondary lead smelter residues
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Closed-loop solvometallurgical process for recovery of lead from iron-rich secondary lead smelter residues

机译：用于回收铁富型二次铅冶炼厂残留物的闭环溶液冶金工艺

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摘要

A solvometallurgical process based on the use of concentrated acetic acid as lixiviant is proposed as an alternative for conventional hydrometallurgical processes to recover lead from iron-rich industrial residues generated by recycling of spent lead-acid batteries in a secondary lead smelter. Under the optimal conditions, a high selectivity for lead was obtained: more than 90% of the lead content could be dissolved, while only a small amount of iron (<6%) was codissolved. Lead was quantitatively recovered from the acetic acid leachate by addition of a stoichiometric amount of sulphuric acid. Acetic acid was recycled by distillation and reused in the leaching step, so that a closed-loop process was obtained. The process was optimised for iron-rich residue (matte), but also a proof-of-principle is given for lead recovery from another lead-containing residue (slag). The main advantages of this solvometallurgical process are the low power consumption (room-temperature process), the low consumption of chemicals (only sulphuric acid is consumed), full recycling of the acetic acid and the limitation of waste water formation.
机译：提出了一种基于浓缩乙酸作为LixIviant的含水量的储存过程作为常规氢化冶金方法的替代方案，以回收来自富含铁耐酸电池在二次引线冶炼厂中的废铅酸蓄电池产生的铅的铅。在最佳条件下，获得了高选择性的铅：可以溶解超过90％的铅含量，而只有少量铁（<6％）是Cocissolved。通过加入化学计量的硫酸，从乙酸渗滤液中定量回收铅。通过蒸馏再循环乙酸并在浸出步骤中重复使用，从而获得闭环过程。该方法针对富含铁的残留物（磨砂）进行了优化，而且还给出了原则上，用于从另一个含铅残留物（炉渣）中的铅回收。该溶解冶金工艺的主要优点是低功耗（室温过程），化学品的低消耗（仅消耗硫酸），乙酸的完全回收和废水形成的限制。

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  • 来源
    《RSC Advances》 |2017年第79期|共7页
  • 作者

    Forte Federica; Horckmans Liesbeth; Broos Kris; Kim Eunyoung; Kukurugya Frantisek; Binnemans Koen;

  • 作者单位

    Katholieke Univ Leuven Dept Chem Celestijnenlaan 200F Bus 2404 B-3001 Heverlee Belgium;

    VITO NV Boeretang 200 B-2400 Mol Belgium;

    VITO NV Boeretang 200 B-2400 Mol Belgium;

    VITO NV Boeretang 200 B-2400 Mol Belgium;

    VITO NV Boeretang 200 B-2400 Mol Belgium;

    Katholieke Univ Leuven Dept Chem Celestijnenlaan 200F Bus 2404 B-3001 Heverlee Belgium;

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  • 正文语种 eng
  • 中图分类 化学;
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